Local Anaesthetics

Question 1

What nerve of the maxillary division of the trigeminal nerve innervates the 1st, 2nd and 3rd molars

Answer 1

Posterior superior alveolar nerve

Question 2

What nerve of the maxillary division of the trigeminal nerve innervates the 1st molars and premolars

Answer 2

Middle SAN

Question 3

What nerve of the maxillary division of the trigeminal nerve innervates the canines and incisors

Answer 3

Anterior superior alveolar nerve

Question 4

What does the greater palatine nerve innervate (maxillary branch of the trigeminal)

Answer 4

palatal mucosa

Question 5

What does the lesser palatine nerve innervate (maxillary branch of the trigeminal)

Answer 5

Soft palate and uvula

Question 6

What does the nasopalatine nerve innervate

Answer 6

palatal mucosa (anteriorly tho bro)

Question 7

What nerve of the mandibular division of the trigeminal nerve innervates all the lower teeth

Answer 7

Inferior alveolar nerve

Question 8

What does the mental nerve innervate

Answer 8

Buccal mucosa anterior to the premolars and the lower lip

Question 9

What does the lingual nerve innervate

Answer 9

Anterior 2/3 tongue

Question 10

What does the mylohyoid nerve innervate

Answer 10

Lower molars

Question 11

What does the long buccal nerve innervate

Answer 11

the buccal gingiva and mucosa opposite the molars

Question 12

What teeth are innervated using infiltration

Answer 12

Upper teeth and lower anteriors

Question 13

What is different about the 3rd molar when doing palatal injections

Answer 13

You gotta inject it anteriorly instead of distally because the GPN foramen lies anteriorly to this tooth

Question 14

What types of block are used to anaesthetise the lower molars and premolars

Answer 14

• Inferior Alveolar Nerve Block
• Mental Block
• Long Buccal Block

Question 15

What conc. is lidocaine and what adrenaline conc is used with it

Answer 15

2% and 1:80,000

Question 16

What conc. is prilocaine and what is its contraindication

Answer 16

3% (4% solution)

contraindicated in the 3rd trimester of pregnancy

Question 17

What conc. is mepivacaine and what is its adrenaline conc.

Answer 17

2% (3% solution)

1:100,000

Question 18

Why might articaine be less preferable compared to other LAs

Answer 18

Shorter 1/2 life, as it is partly metabolised in the plasma

Question 19

Describe the location of the pterygomandibular space where we inject for IANBs

Answer 19

• Posterior–Parotidgland
• Laterally – Ramus
• Medially & inferiorly – Medial pterygoid muscle
• Superiorly – Lateral pterygoid muscle
• Anteriorly – Buccinator muscle

Question 20

What is the conc of Bupivicaine and what conc of adrenaline does it have

Answer 20

0. 25-0.5%

1: 200,000

Question 21

What vasoconstrictor does Prilocaine use

Answer 21

Felypressin

Question 22

Why does Bupivicaine have a longer lasting effect

Answer 22

Due to protein binding

Question 23

What is the maximum dose of Articaine (4% with epinephrine)

Answer 23

7mg/kg in adults - up to 500mg

5mg/kg in children

Question 24

What is the concentration of Articaine LA

Answer 24

4%

Question 25

What concentration of adrenaline does articaine have

Answer 25

1:100,000

Question 26

What is the maximum dose of Bupivacaine (0.5% with epinephrine)

Answer 26

2mg/kg - up to 200mg

Question 27

What is the maximum dose of Lidocaine (2% with epinephrine)

Answer 27

7mg/kg (up to 500mg)

Question 28

What is the maximum dose of Prilocaine (4% with epinephrine)

Answer 28

8mg/kg - up to 500mg

Question 29

What is the max number of cartridges for articaine

Answer 29

7

20kg child = 1.4

Question 30

What is the max number of cartridges for bupivacaine

Answer 30

10

Question 31

What is the max number of cartridges for lidocaine

Answer 31

11

20kg child = 3.9

Question 32

What is the max number of cartridges for prilocaine

Answer 32

8

20kg child = 2.2